Invariant differential operators under the action of a reductive group

Thierry Levasseur

Abstract: Let G be a reductive group acting on a complex affine variety X and X//G be the categorical quotient. If D(X) is the ring of algebraic differential operators on X, we review old and new results on the natural map from D(X)G to D(X//G).

created Fri Mar 17 17:11:20 PST 2000